View source for PNO-II-86-002, on 851229,shutdown Initiated Due to RCS Leakage Exceeding Tech Spec Limits.Pressure Vessel Head Will Be Removed for Repair of Reactor Pressure Vessel Head Seals.Unit Will Be Out of Svc for Addl 16 Days

{{Adams
| number = ML20137A283
| issue date = 01/07/1986
| title = PNO-II-86-002:on 851229,shutdown Initiated Due to RCS Leakage Exceeding Tech Spec Limits.Pressure Vessel Head Will Be Removed for Repair of Reactor Pressure Vessel Head Seals.Unit Will Be Out of Svc for Addl 16 Days
| author name = Elrod S, Guenther S
| author affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION II)
| addressee name = 
| addressee affiliation = 
| docket = 05000338
| license number = 
| contact person = 
| document report number = PNO-II-86-002, PNO-II-86-2, NUDOCS 8601140265
| document type = PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO,, TEXT-INSPECTION &amp; AUDIT &amp; I&amp;E CIRCULARS
| page count = 1
}}
{{#Wiki_filter:!
January 7, 1986 PRELIMINARY NOTIFICATION OF EVENT OR-UNUSUAL OCCURRENCE PNO-II-86-02 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance.       The information is as initially received without verifi-cation or evaluation, and is basically all that is known by the Region II staff on this data..
FACILITY: Virginia Electric & Power Company              Licensee Emergency Classification:
North Anna Unit 1                                 Notification of Unusual Event Docket No. 50-338                                 Alert Mineral, Virginia                                 Site Area Emergency General Emergency X Not Applicable

==SUBJECT:==
SHUTDOWN IN EXCESS OF 48 HOURS - UPDATE
  -. Virginia Power has repaired an incore thermocouple electrical connection seal, the suspected path for unidentified reactor coolant system leakage which exceeded the technical specification limit and which was the cause for shutdown of North Anna Unit 1 on December 29(PN9-II-85-122).
But when the unit was returned to normal operating temperature and pressure earlier today, the unidentified leakage persisted. Virginia Power, having now determined tFat the leakage is coming from the reactor pressure vessel head seals, is taking steps to remove the pr;ssure vessel head.      As a result, it is estimated that the unit will be out of service for another 16 days.
Virginia Power is prepared to respond to media inquiries.
  .The Commonwealth of Virginia has been informed.
This information is current as of 11 a.m. (EST) today.

==Contact:==
S. Guenther, 242-5568                              S. A. Elrod, 242-5536 DISTRIBUTION:                                                      V H. Street //iJ         MNBB21'7 Phillips 2 :g E/W###f  Willste      MAIL:
Chairman Palladino M T~         NRR          IT"       NMSS         ERIN 1B Comm. Roberts          PA                     OIA      RES          D0T: Trans Only Conn. Asselstine       MPA                    AE0D                  Applicable State Comm. Bernthal         ELD Comm. Zech             Air Rights /            INP0 - 4:2.5 SECY                 -
SP               NSAC ACRS CA PDR                          Regions: l-4:5d.3-4.35 1 Ll: 37, S' 4 ; W 3
Licensee: 4.50 (Reactor Licensees)
Applicable Resident Site 4*.43                    g g 14 l
_                                 o   (
B601140265 B60107                                                   ,          I PDR     IsrE PNO-II-96-OO2 PDR l
-}}

{{PNO-Nav|region=II}}